Web/API/CloseEvent/CloseEvent

The CloseEvent() constructor creates a new CloseEvent.

Syntax

var event = new CloseEvent(typeArg, closeEventInit);

Values

typeArg

Is a DOMString representing the name of the event.

closeEventInit Optional

Is a CloseEventInit dictionary, having the following fields:

• "wasClean", optional and defaulting to false, of type long, indicates if the connection has been closed cleanly or not.
• "code", optional and defaulting to 0, of type unsigned short, that is the connection close code sent by the server.
• "reason", optional and defaulting to , of type DOMString, that is a human-readable reason why the server closed the connection.

The CloseEventInit dictionary also accepts fields from the EventInit dictionary.

Specifications

Specification	Status	Comment
HTML Living StandardThe definition of 'CloseEvent()' in that specification.	Living Standard	Initial definition.

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
CloseEvent() constructor	Chrome ?	Edge ?	Firefox Full support 8	IE ?	Opera ?	Safari ?	WebView Android ?	Chrome Android ?	Firefox Android Full support 8	Opera Android ?	Safari iOS ?	Samsung Internet Android ?

Legend

Full support  

Full support

Compatibility unknown  

Compatibility unknown

See also

• CloseEvent, the interface of the objects it constructs.

CloseEvent() by Mozilla Contributors is licensed under CC-BY-SA 2.5.